Intermediate
142 entries match these filters
- 0421 grep, sed, awk and jq: the four text tools you will use every week A working reference for the four commands that handle most text on the command line: grep finds lines, sed edits them, awk… Intermediate · Cheat sheet · Linux, macOS Article jq & JSON on the command line · Modern command-line tools · Text processing 15 Oct 2026
- 0422 Dotfiles: keep your shell setup in git Put .bashrc, .zshrc, .gitconfig and your editor settings into a git repository so a new machine is set up in minutes: a… Intermediate · Step by step · Linux, macOS Article Modern command-line tools · Setup 15 Oct 2026
- 0424 Cron-safe wrapper: lock, log and report failures for any scheduled command Wrap any cron or timer job so it never runs twice at once, writes a timestamped log, keeps the exit code and… Intermediate · Step by step · Linux Script cron & timers · Shell scripting 15 Oct 2026
- 0380 GitHub Actions cheat sheet: triggers, matrix, secrets, caching The GitHub Actions syntax you reach for most, in copy-ready blocks: event triggers and filters, build matrices, secrets and permissions, dependency caching… Intermediate · Cheat sheet · Any system Article GitHub Actions 15 Oct 2026
- 0382 Fix: Resource not accessible by integration and other GitHub Actions permission errors A workflow step fails with Resource not accessible by integration, 403 on git push, or a GitHub CLI call is refused. The… Intermediate · Fixes an error · Any system Article GitHub Actions 15 Oct 2026
- 0373 Loki: ship and search logs Run Loki, Grafana Alloy and Grafana with Docker Compose, collect the systemd journal and /var/log files with a short Alloy configuration, and… Intermediate · Step by step · Linux Article Logs 15 Oct 2026
- 0374 Alert rules that do not wake you for nothing How to design alerts people trust: alert on symptoms not causes, use for durations, separate page from ticket severities, group and inhibit… Intermediate · Explains an idea · Any system Article Alerting & dashboards 15 Oct 2026
- 0375 Fix: disk full, find what is eating the space A Linux filesystem reports 100 percent used or No space left on device. Find the culprit with df and du, check journals,… Intermediate · Fixes an error · Linux Article Alerting & dashboards · Disks, LVM & filesystems 15 Oct 2026
- 0346 The SSH config file: aliases, jump hosts and keys per server Reference for ~/.ssh/config: short names for servers, the right user, port and key per host, ProxyJump through a bastion, connection reuse and… Intermediate · Cheat sheet · Linux, macOS, Windows Article Keys & config · SSH 15 Oct 2026
- 0349 Set up a WireGuard VPN with wg-easy in Docker Run a WireGuard server with a web admin page on one Linux host, open the UDP port, add a client from the… Intermediate · Guided project · Linux Article Networking & firewalls · VPN & tunnels 15 Oct 2026